Press Release
PT DSSR Daya Mas Sakti and FirstGen Geothermal Indonesia Join Forces to Drive Indonesia’s Clean Energy Transformation
Jakarta, 31 October 2025 – PT DSSR Daya Mas Sakti (“DSSR”), a subsidiary of PT Dian Swastatika Sentosa Tbk (“DSSA”), part of Sinar Mas, has entered into a Shareholders’ Agreement with PT FirstGen Geothermal Indonesia, a subsidiary of Energy Development Corporation (“EDC”)—part of First Gen Corporation (“First Gen”), the largest renewable energy producer in the Philippines.
This follows the partnership agreement signed by both parties in August 2025, marking the beginning of a collaboration aimed at transferring global expertise, enhancing domestic capacity, and unlocking Indonesia’s vast geothermal potential in support of the country’s energy transition agenda.
This collaboration marks a significant milestone in Indonesia’s journey toward sustainable energy through the establishment of PT Daya Mas Bumi Sentosa (“DMBS”), which will lead geothermal exploration and development activities across various regions in Indonesia. Through DMBS, DSSR and FirstGen will focus on developing geothermal projects across Indonesia, with a combined potential of approximately 440 megawatts in six strategic locations — West Java, Flores, Jambi, West Sumatra, and Central Sulawesi.
“Our collaboration with FirstGen goes beyond capital investment—it is about building Indonesia’s capability to lead in geothermal energy,” said Lokita Prasetya, President Director of PT DSSR Daya Mas Sakti and Vice President Director and Managing Director of Energy and Chemical Business of PT Dian Swastatika Sentosa Tbk. “By combining EDC’s international and development experience, we are laying the groundwork for a stronger, more resilient clean energy ecosystem that benefits communities and supports Indonesia’s long-term sustainability goals.”